Within the last few days we read the news about Apple's Siri AI personal assistant, and about a brain implant that lets monkeys control virtual limps & feel virtual objects. I believe that if someone is to also combine a few more technologies (e.g. high-res eyeware, appropriate operating system changes), we will be looking at the next user interface revolution, after the inventions of the computer mouse and touch interfaces.

I'll try to describe it the best I can. It is difficult to explain because it is very subjective I think.

You how know when you want to hear something better you 'shift your focus' to your ears and how you can do this with other parts of your body. (There's a well known meditation technique where you do this with your whole body starting from your feet.)
I focused on a part of my brain like this, at first the rocket did nothing but when I repeated this the rocket did start to react. It did this very quickly, well under a minute. It did not react smoothly however but after a while (maybe a minute) it reacted very well.
I remember testing if focusing on other parts of my brain gave effect, which was a negative.

EDIT: By thinking/focussing 'louder' I could make the rocket increase it's speed.

The fact that I did this by focusing on a part of the brain was just my way of doing things. I just thought that I needed to create some electrical charge at a place of my brain where there where many electrodes. The operator told me to 'just move it up'.

My interpretation is that it doesn't move because you are thinking "please move up", but that you are just pressing buttons with you head. The computer is just looking for peaks in the brainwave signal, maybe it can read frustration or accomplishment so it can know if it did the right thing.

Sorry this is all I can remember though... Recently they where testing me for a rare form of epilepsy. I got many electrodes glued to my head going to an amplifier and then via a LPT-connector to a recording box.
Next time I have to wear this at home, and I will hook myself up to my computer. I'll do some experiments and post the results.